In this week’s podcast QCon chair Wesley Reisz talks to Randy Shoup. Shoup is the vice president of engineering at Stitch Fix. Prior to Stitch Fix, he worked for Google as the director of engineering and cloud computing, CTO and co-founder of Shopilly, and chief engineer at Ebay. Key Takeaways Stitch Fix’s business is a combination of art and science. Humans are much better with the machines, and the machines are much better with the humans. Stitch Fix has 60 engineers, with 80 data scientists and algorithm developers. This ratio of data science to engineering is unique. With Ruby-on-Rails on top of Postgres, the company maintains about 30 different applications on the same stack. The practice of Test Driven Development makes Continuous Delivery work, and the practice of having the same…